The Prime Minister's Office is a ministry of the Government of Sri Lanka.
It provides the administrative and institutional framework for the exercise of the duties and responsibilities vested in the Prime Minister of Sri Lanka.
Per the Westminster tradition, the prime minister had an office at the Parliament too.
The LTTE carried out a suicide bombing at the Prime Minister's Office, on January 5, 2000 in an assassination attempt when a female suicide bomber detonated the bomb outside the Prime Minister's Office, killing 13 civilians and three police officers attached to the PMSD.
On 13 July 2022, during the 2022 Sri Lankan protests, thousands of protesters stormed and occupied the Prime Minister's Office, after the President's House, the Presidential Secretariat and Temple Trees been stormed and occupied on the 9 July 2022 demanding that both president Gotabaya Rajapaksa and prime minister Ranil Wickremesinghe resign immediately.